Continental Bulldog genetic information
Robinow-like syndrome (DVL2)
Robinow-like syndrome (DVL2) in dogs is caused by genetic variants of the *DVL2* gene. This syndrome is characterized by distinctive facial abnormalities such as a prominent forehead, widely spaced eyes, and a flat nasal bridge. Additionally, it leads to mesomelic limb shortening as well as cardiac, oral, and urogenital abnormalities. A variant of the *DVL2* gene has been identified in certain dog breeds, such as the American Bulldog, French Bulldog, and Boston Terrier. This variant alters the DVL2 protein, which plays a crucial role in tissue development by influencing a key cell-signaling pathway. Dogs carrying this variant exhibit a broad head, a short muzzle (brachycephaly), widely spaced eyes, and small stature. They also often have a truncated, curled tail, earning them the nickname "corkscrew-tail breeds." The *DVL2* variant is inherited recessively and is associated with thoracic and caudal vertebral malformations. This variant is also found in other dog breeds, though without the tail malformation. Research is ongoing to determine whether this variant is linked to other health issues, such as brachycephalic obstructive airway syndrome and congenital heart defects.
Cystinuria (CYST)
Cystinuria in dogs is a hereditary genetic disease that causes the accumulation of cystine in the kidneys. Normally, cystine present in the blood is filtered by the kidneys and returned to the bloodstream to prevent it from being excreted in the urine. However, in dogs with cystinuria, this reabsorption does not occur correctly, leading to the formation of cystine stones in the urinary tract. Degenerative Myelopathy (DM) Degenerative myelopathy in dogs, also known as degenerative radiculomyelopathy, involves the progressive degeneration of the spinal cord. It manifests as ataxia (lack of coordination) and paresis (muscle weakness), accompanied by a proprioceptive deficit in the hind limbs. Initially asymmetrical, the condition gradually becomes symmetrical.
Hyperuricosuria (HUU)
Hyperuricosuria (HUU) is a genetic predisposition in dogs characterized by excessive levels of uric acid in the urine. This condition can also lead to the formation of painful kidney or bladder stones. HUU is caused by a mutation in the *SLC2A9* gene, which codes for a protein involved in uric acid metabolism.
Canine Multifocal Retinopathy (CMR1)
Canine multifocal retinopathy (CMR1) is an inherited eye disease caused by a mutation in the *Bestrophin 1* gene. This mutation results in the production of a shortened, dysfunctional protein. Affected dogs typically exhibit multiple circular areas of retinal detachment between 11 and 16 weeks of age. These areas of detachment are accompanied by blisters of varying sizes and colors within the retina, though vision is generally not impaired. New lesions cease to appear after 6 to 12 months.
Chondrodysplasia (CDPA)
Chondrodysplasia in dogs is a syndrome that results in abnormal cartilage and bone development. It manifests as limbs that are shorter than normal, accompanied by curvature. More specifically, it involves the disorganized proliferation of growth plate cartilage, resulting in bone thickening without proportional lengthening. The condition may be severe if associated with other clinical signs, such as outward-turning paws (valgus deformity), a plantigrade stance, or splayed elbows. Diagnosis is made during an orthopedic consultation, supplemented by radiographic examinations.
Chondrodystrophy (CDDY)
Canine chondrodystrophy is a medical condition caused by cartilage abnormalities. Specifically, it manifests as short legs. The condition is also known as achondroplasia, chondrodysplasia, or short-limbed dwarfism. It results from an ossification anomaly, leading to shortened limbs and, typically, limb curvature.